Water Pump Impeller For Johnson Evinrude Outboard 375638 775518 Sierra 18-3002

Water Pump Impeller for Johnson Evinrude

This water pump impeller is an aftermarket replacement for Johnson Evinrude outboards and for Sierra 18-3002, with cross-reference to OEM part numbers 375638 and 775518. This water pump impeller delivers steady coolant flow for Johnson Evinrude outboard motors to prevent overheating.

Overview

This water pump impeller is a direct replacement cooling component for Johnson Evinrude outboard motors. It is interchangeable with OEM part numbers 375638 and 775518 and cross-references for Sierra 18-3002. This water pump impeller suits mechanics and boaters maintaining Johnson Evinrude outboards.

Built For Performance

• Precision molded rubber vanes produce consistent water flow for dependable cooling.
• Corrosion-resistant materials handle freshwater and saltwater environments.
• Builds to match dimensional specifications for 375638 and 775518.
• Drop-in replacement for standard water pump assemblies on Johnson Evinrude outboards.
• Cross-referenced for Sierra 18-3002 for easy parts identification.

On-The-Job Use

• Used during scheduled water pump service on Johnson Evinrude outboard engines.
• Addresses overheating problems such as reduced tell-tale flow or steam from the housing.
• Commonly installed in freshwater and saltwater boat cooling systems.
• Replaces worn impellers before they cause engine damage.

Specs At A Glance

Good To Know

Q: Is this impeller a genuine OEM part? A: No, it is an aftermarket replacement built to match OEM part numbers 375638 and 775518. It also cross-references for Sierra 18-3002.

Q: What happens when impeller replacement is delayed? A: A worn impeller can reduce coolant flow and cause the outboard to overheat. Replace it when vanes show cracks, wear, or distortion during routine service.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.